Developer experience rework

[iluha168]

• Replace KubeJS Style Guide from CONTRIBUTORS.md with something among the lines of "Use ESLint". Say goodbye to routine "Cleanup and Lint" commits and long guides some will ignore anyway
• Add vscode workspace
• NPM in build tools
• Rule for https://discord.com/channels/914926812948234260/1229929078547550238/1332789911702605856
• Standartize LF
• Datafiles validation (throw an error when a file used for codegen contains invalid data)

Changes TL;DR:

• Now Monifactory is a monorepo, open .vscode/moni.code-workspace
  • Includes some workspaces as aliases to commonly accessed folders.
• A more concise CONTRIBUTORS.md.
• /kubejs, /tools/build:
  • has ESLint;
  • has workflow that checks ESLint on pull requests (only if there are changes in the corresponding directory);
  • is an NPM root.
• /tools/build:
  • Juke Build is now an NPM dependency (instead of minified code being stored in the repo);
  • uses zod, invalid configuration files will throw errors preemptively.
• /kubejs/dx/eslint-plugins:
  • contains custom ESLint plugins for the KubeJS codebase.